CYLED 6-Pack T8 4Ft LED 20W Tube 40 Watt Fluorescent Equivalent Pure White (6000K)48inch standard fluorescent Frosted Cover UL & DLC listed 110-265V Both Ended Input Save 60% Energy by this 40w Fluorescent Equivalent 20w T8 LED Tube Crystal Drosted Cover for Maximum Output (2200 Lumens), at Pure White (6000k). No Brightness Degradation; Over 50,000 Hours Lifespan; Maintenance Free. UL Listed, DLC Listed; High Efficiency - over 100 lumens per watt International standard shape for T8 tube light-4ft, Easily fitted instead of traditional fluorescent tube lamps, bypass the starter and ballast before installation